Chess is as much a 'know-how' skill as a 'know-that' body of knowledge.
RB Ramesh said something in an interview that I thought was very wise (and I paraphrase):
"If I want to learn swimming and don’t know how to swim, I buy some DVDs from a famous swimming coach or swimming world champion, who has done a 10-hour course. So I watch this course every day for one month, so I know all the theory, right, and what needs to be done, but if you push me into a swimming pool I will drown!"